题目内容

The most concentrated deforestation occurs in tropical rainforests.

A. 对
B. 错

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El Nino phenomenon doesn't occur in a perfectly regular pattern. It seems to happen every 2 to 7 years.

A. 对
B. 错

The ultraviolet radiation from the sun can produce long-term effects on human beings and animals, but not on plants.

A. 对
B. 错

Speechescanbearrangedinproblem-solutionorder.

A. 对
B. 错

Somespeechesareorganizedintermsofcause-to-effectoreffect-to-causereasoning.

A. 对
B. 错

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